Hello Sascha, On 20/2/19 08:55, Sascha Hauer wrote: > On Tue, Feb 19, 2019 at 10:10:02PM +0100, Ahmad Fatoum wrote: >> Hello Sam, >> >> On 19/2/19 21:42, Sam Ravnborg wrote: >>> Hi Ahmad. >>> >>> On Tue, Feb 19, 2019 at 01:06:10PM +0100, Ahmad Fatoum wrote: >>>> This is in line with other platforms such as i.MX, which allow >>>> specifying a debug port. As we can't use port indices because >>>> the UARTs aren't mapped consecutively, allow specifying a hex >>>> base at configuration time. >>>> >>>> A side effect of this patch is that sama5d4's HAVE_AT91_DBGU2 >>>> is now honored as well. Previously anything besides DBGU0 >>>> defaulted to DBGU1. >>> >>> This approch hardcoded the DBGU address based on the configuration. >>> Can you somehow come up with something that is run-time configured? >> >> I think it should remain build-time configurable, to account for cases >> such as when the designated debug port isn't usable for whatever reason >> (e.g. its exposed via a USB-to-UART bridge and you want to use a proper >> UART, because you hate that the disconnection on power cycle..). > > Something like this should work: > > config AT91_DEBUG_DEFAULT_BASE > hex > default 0xfffff200 if AT91_DBGU_AT91RM9200 > default 0xffffee00 if AT91_DBGU_AT91SAM9263 > default 0xfc069000 if AT91_DBGU_AT91SAMA5D4 > > choice > prompt "Choose Lowlevel debug UART" > > config AT91_DBGU_AT91RM9200 > bool "AT91RM9200, AT91SAM926[01], AT91SAM9x5, AT91SAM9N12" > config AT91_DBGU_AT91SAM9263 > bool "AT91SAM9263, AT91SAM9G45, ARCH_SAMA5D3" > config AT91_DBGU_AT91SAMA5D4 > bool "AT91SAMA5D4" > endchoice > > This lets you choose the right one if multiple SoCs are enabled during > build. Of course it only works if you choose the correct one for the SoC > you are running on later.
I would like to keep it configurable, i.e. the user can choose which UART port to choose. Is this ok? > > Sascha > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
